柔性直流输电换流阀用直流支撑电容器温升研究

李建涛; 宁小波; 王会超; 李少辉; 李天勇; 李明昊

doi:10.14044/j.1674-1757.pcrpc.2026.04.005

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柔性直流输电换流阀用直流支撑电容器温升研究

电力电容器与无功补偿 | 聚丙烯薄膜电容器全链条国产化关键技术

柔性直流输电换流阀用直流支撑电容器温升研究
Research on Temperature Rise Charactersitics of DC-link Capacitor for VSC-HVDC Converter Valve
来恩伟业（鹤壁）电子科技有限责任公司，河南鹤壁 458030
2026年47卷第4期页码：41-46
DOI：10.14044/j.1674-1757.pcrpc.2026.04.005
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李建涛, 宁小波, 王会超, 等. 柔性直流输电换流阀用直流支撑电容器温升研究[J]. 电力电容器与无功补偿, 2026,47(4):41-46.

LI Jiantao, NING Xiaobo, WANG Huichao, et al. Research on Temperature Rise Charactersitics of DC-link Capacitor for VSC-HVDC Converter Valve[J]. Power Capacitor & Reactive Power Compensation, 2026, 47(4): 41-46.
李建涛, 宁小波, 王会超, 等. 柔性直流输电换流阀用直流支撑电容器温升研究[J]. 电力电容器与无功补偿, 2026,47(4):41-46. DOI： 10.14044/j.1674-1757.pcrpc.2026.04.005.

LI Jiantao, NING Xiaobo, WANG Huichao, et al. Research on Temperature Rise Charactersitics of DC-link Capacitor for VSC-HVDC Converter Valve[J]. Power Capacitor & Reactive Power Compensation, 2026, 47(4): 41-46. DOI： 10.14044/j.1674-1757.pcrpc.2026.04.005.

摘要

温升性能对电容器至关重要，温升的高低直接影响电容器的寿命。为了降低柔性直流输电换流阀用直流支撑电容器（简称柔直电容器）的温升，研究了影响柔直电容器温升的因素及规律。通过对试验数据的分析，得出影响电容器温升的因素繁多，几乎涵盖了电容器的方方面面。降低柔直电容器温升应从多方面进行改进和优化，材料方面，建议选取低损耗的PP介质，导体选用电阻率低的紫铜，在保证极壳绝缘性能的前提下选择尽可能大导热系数的聚氨酯。设计方面，建议金属化膜低方阻区宽度占薄膜总幅宽的20%～30%为宜，单个心子不宜过大，控制其直径在68～78 mm为宜，铜带电流密度建议选择≤1.5 A/mm

。工艺方面，建议卷绕间洁净度至少10 000级，喷金气压选择应0.3 MPa～0.4 MPa之间为宜，焊接建议采用恒温自动化焊接，灌注建议采用真空度低于100 Pa的真空灌注为宜。试验方面，尽量采取接近实际运行的状态进行试验，以消除影响温升试验结果的干扰因素，得到尽可能准确的试验结果。

Abstract

Temperature rise performance is crucial for capacitors

as the level of temperature rise directly affects their service life. In order to reduce the temperature rise of DC-link capacitor for VSC-HVDC converter valves (referred to as VSC HVDC capacitor)

the influencing factors and their regularities affecting the temperature rise of such capacitors are investigated. It is found through analysis of experimental data that numerous factors influence capacitor temperature rise

covering almost every aspect of the capacitors. To reduce the temperature rise of VSC HVDC capacitors

improvements and optimizations shall be carried out in multiple aspects. In terms of materials

it is recommended to select PP dielectric with low loss

choose copper with low resistivity for the conductors

and

on the premise of ensuring the insulation performance between the electrode and the case

select polyurethane with as high thermal conductivity as possible. In terms of design

it is recommended that the width of the low-sheet-resistance zone of the metallized film account for 20

% to 30% of the total film width. The individual winding core shall not be excessively large

with its diameter being preferably controlled within the range of 68 to 78 mm. The current density of the copper strip is suggested to be no more than 1.5 A/mm

. In terms of processing

the cleanliness of the winding workshop shall be at least Class 10 000

the spraying pressure shall be controlled between 0.3 MPa and 0.4 MPa. The constant-temperature automated welding is recommended for soldering

and vacuum impregnation with a vacuum level below 100 Pa is preferred for the filling process. In terms of testing

the tests shall be conducted under conditions as close as possible to actual operating conditions

so as to eliminate interfering factors that may affect the temperature rise test results and to obtain the most accurate possible test results.

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references

饶宏.柔性直流输电[M].北京:科学出版社,2022.

李维维,高琪,芦锋.柔性直流输电工程用直流支撑电容器的开发探讨[J].电力电容器与无功补偿,2017,38(3):95-98.

LI Weiwei,GAO Qi,LU Feng. Discussion on the development of DC-link capacitor for flexible HVDC transmission project[J]. Power Capacitor & Reactive Power Compensation,2017,38(3):95-98.

沈文琪.电力电容器箱壳的相对尺寸对其温升的影响[J].电力电容器与无功补偿,2005,28(4):32-33.

SHEN Wenqi. The influence of the relative dimension of the tank of power capacitor on its temperature rise[J]. Power Capacitor & Reactive Power Compensation,2005,28(4):32-33.

杜伯学,冉昭玉,刘浩梁,等.干式直流电容器聚丙烯薄膜绝缘性能及其改进方法研究进展[J].电工技术学报, 2023,38(5):1363-1374.

DU Baixue,RAN Zhaoyu,LIU Haoliang,et al. Research progress of dielectric properties and improvement methods of polypropylene film for dry-type capacitor[J]. Transactions of China Electrotechnical Society,2023,38(5):1363-1374.

刘泳斌,曹均正,黄金魁,等.金属化膜电容器可靠性研究进展[J].电力电容器与无功补偿,2019,40(1):53-58.

LIU Yongbin,CAO Junzheng,HUANG Jinkui,et al. Study development on the reliability of metallized film capacitor[J]. Power Capacitor & Reactive Power Compensation,2019, 40(1):53-58.

严飞,李化,陈伟,等.金属化安全膜结构设计方法研究[J].电力电容器与无功补偿,2020,41(4):7-11.

YAN Fei,LI Hua,CHEN Wei,et al. Study on structure design method of metallized safety film[J]. Power Capacitor &Reactive Power Compensation,2020,41(4):7-11.

岳国华,杜志叶,孟圣淳,等.基于电热耦合的干式直流电容器温升分布不均匀特性分析及优化[J].高电压技术,2022,48(12):4915-4924.

YUE Guohua,DU Zhiye,MENG Shengchun,et al. Analysis and optimization of non-uniform temperature rise distribution of dry-type DC capacitor based on electro-thermal coupling[J]. High Voltage Engineering,2022,48(12):4915-4924.

金维芳.电介质物理学[M].北京:机械工业出版社, 1997.

NASH J L. Biaxially oriented polypropylene film in power Capacitors[J]. Polymer Engineering&Science,1988,28(13):862-870.

HO J,JOW T R. High field conduction in biaxially oriented polypropylene at elevated temperature[J]. IEEE Transactions on Dielectrics and Electrical Insulation,2012,19(3):990-995.

陈耀红.高储能密度金属化膜电容器应用性能及其影响因素研究[D].武汉:华中科技大学,2013.

陈温良.金属化电力电容器的热计算问题[J].电力电容器,2003(z1):53-57.

CHEN Wenliang. Thermal calculation of metallized power capacitor[J]. Power Capacitor,2003(z1):53-57.

李化,章妙,林福昌,等.金属化膜电容器自愈理论及规律研究[J].电工技术学报,2012,27(9):218-223.

LI Hua,ZHANG Miao,LIN Fuchang,et al. Study on theory and influence factors of self-healing in metallized film capacitors[J]. Transactions of China Electrotechnical Society, 2012,27(9):218-223.

麦堪成,蔡泽伟. Al 2 O 3 /聚丙烯复合材料的导热性能研究[J ] .塑料,2006,35(3):30-33.

MAI Kancheng,CAI Zewei. Thermal conductivities of Alumina filled polypropylene composites[J]. Plastics,2006,35(3):30-33.

郑峰.常用金属材料手册[M].北京:化学工业出版社, 2007.

胡轶嵩,姜葳,罗发,等.高温氧化对304不锈钢红外发射率影响研究[J].西北工业大学学报,2020,38(1):225229.

HU Yisong,JIANG Wei,LUO Fa,et al. Effect of high temperature oxidation on infrared irradiation of stainless steel 304[J]. Journal of Northwestern Polytechnical University, 2020,38(1):225-229.

柔性直流输电换流阀用直流电容器:NB/T 11388—2023[S]. 2023.

DC-link capacitors o fconverter valves for high-voltage direct current power transmission using voltage sourced converters:NB/T 11388—2023[S]. 2023.

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